To do this first you get the MasterBoy Emulator(http://dl.qj.net/MasterBoy-v2.02-PSP-Emulators/pg/12/fid/14466/catid/121). Download this to your PSP\\GAME folder on you CFW PSP. Then get gameboy or gameboy color roms from Dope Roms(http://doperoms.com/roms/Gameboy_And_Gbc.html). After getting roms you copt them to the PSP\\GAME\\MasterBoy\\Roms GBC folder on your psp. After that start the MasterBoy Emulator on your CFW PSP. Go to File is the MasterBoy menu and select Load ROM from the list. Then select the your rom from the list and run it.(A button=0 and B button=X)

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